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參數(shù)資料
| 型號(hào)： | 8817 |
| 廠商： | Asahi Kasei Microsystems Co.,Ltd |
| 英文描述： | NTSC/PAL Digital Video Encoder |
| 中文描述： | NTSC / PAL數(shù)字視頻編碼器 |
| 文件頁數(shù)： | 17/43頁 |
| 文件大?。?/td> | 818K |
| 代理商： | 8817 |
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ASAHI KASEI
[AK8817]
MS0413-E-00
17
2005 / Aug
(13) Video Amp
AK8817 has Video amp that can drive 150ohm with Low pass filter. It can also possible to compensate SAG distortion.
To compensate SAG external capacitor is 47uF and 1uF as shown following figure. Recommendation voltage when SAG
compensation circuit is used is 3V or more.
VOUT pin and SAG pin should be shorten when SAG Compensation is not used. Output pin should make AC coupling.
SAG Compensation circuit can be set on or off with setting register.
In case of not using internal Video amp (Only DAC use case), Video Amp becomes power down. In this case SAG and
VOUT should be Open.
AK8817
VOUT
SAG
47uF
1uF
75ohm
SAG Compensation ON
AK8817
VOUT
SAG
75ohm
SAG Compensation Off
100uF
VAMPMD[1:0]
00
Operation
Conditions
Only DAC output
Recommendation Voltage of
DVDD/AVDD is 3v or more.
SAG pin and VOUT should be
shorten.
Video Amp OFF + SAG Compensation OFF
01
Video AMP ON + SAG Compensation ON
10
Video Amp ON + No SAG Compensation
11
Reserved
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